Shimano DURA-ACE ST-7970 User Manual
DURA-ACE Dual Control Lever (FLIGHT DECK Compatible)
ST-7970
9
For Right Hand For Left Hand
10
1 1
11
2
3
4
6
8
7
12
5
3
4
8
7
13 14
2
ITEM
NO.
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1
*
2
*
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4
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SHIMANO
CODE NO.
98010
Y-6RX
98020
Y-6RX
98030
Y-6RX
98040
Y-6RX
81000
Y-6RX
98050
Y-6RX
98060
Y-6RX
98070
Y-6RX
98080
Y-6RX
98090
Y-6RX
78000
Y-6RX
98100
Y-6RX
98110
Y-6RX
32000
Y-6RX
98120
Y-6RX
02000
Y-7CY
DESCRIPTION
R.H. Main Lever Assembly
L.H. Main Lever Assembly
Cable Hook Unit
Cable Guide & Fixing Bolt
Return Spring
Lever Axle & Fixing Bolt
Switch Unit Fixing Screw (2 pcs.)
Switch Spring Button (2 pcs.)
Switch Spring (2 pcs.)
Clamp Band Unit ( 23.8 mm Ð 24.2 mm)
Grip Adjusting Screw (M4 x 7.6)
R.H. Bracket
L.H. Bracket
Dummy Plug ST
Bracket Covers (Pair)
TL-EW01 Plug Tool
0901-2900
ST-7970
DUAL CONTROL LEVER
Levier à commande double
Palanca de doble control
デュアルコントロールレバー
SERVICE INSTRUCTIONS
INSTRUCTIONS DE MONTAGE
INSTRUCCIONES DE SERVICIO
取扱い説明書
SI-6RX0A-005-00
D
D
D
D
D
English
3–14
INDEX
Gear shifting operation
••••••••••••••••••••
4
Installation
••••••••••••••••••••••••••••••
5
Adjustment
••••••••••••••••••••••••••••••
6
Other lever operation functions
•••••••••••••
10
Maintenance
•••••••••••••••••••••••••••••
11
D
D
D
D
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French
15–26
INDEX
Fonctionnement du changement de vitesses
•••••
16
Montage
••••••••••••••••••••••••••••••••
17
Réglage
•••••••••••••••••••••••••••••••••
18
Autres fonctions d'utilisation des leviers
••••••
22
Entretien
••••••••••••••••••••••••••••••••
23
D
D
D
D
D
Spanish
27–38
INDEX
Funcionamiento de los cambios
••••••••••••••
28
Instalación
•••••••••••••••••••••••••••••••
29
Ajuste
•••••••••••••••••••••••••••••••••••
30
Otras funciones de la palanca
•••••••••••••••
34
Mantenimiento
•••••••••••••••••••••••••••
35
D
D
D
D
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Japanese
39–50
もくじ
変速操作方法••••••••••••••••••••••••••••
40
取付け••••••••••••••••••••••••••••••••••
41
調整••••••••••••••••••••••••••••••••••••
42
その他のレバー操作機能 ••••••••••••••••••
46
メンテナンス••••••••••••••••••••••••••••
47
DURA-ACE
ST-7970
EW-7970/7972/7973/7975, SM-EW79A
SM-BTR1 / SM-BCR1
20
FD-7970
FC-7900
RD-7970
FH-7900
CS-7900 (Except for 11-28T)
CN-7900
BR-7900
Series
Dual control lever
Electric cable
Battery / Battery charger
Gears
Front derailleur
Front chainwheel
Rear derailleur
Freehub
Cassette sprocket
Chain
Caliper brake
3
General Safety Information
WARNING
• When the shifting switch is operated, the motor
which drives the front derailleur will operate
without stopping at the shifting lever position.
Always be sure to remove the battery before
carrying out installation and adjustment,
otherwise your fingers may become stuck.
• Obtain and read the service instructions carefully
prior to installing the parts. Loose, worn or
damaged parts may cause the bicycle to fall over
and serious injury may occur as a result. We
strongly recommend only using genuine Shimano
replacement parts.
• Obtain and read the service instructions carefully
prior to installing the parts. If adjustments are not
carried out correctly, the chain may come off and
this may cause you to fall off the bicycle which
could result in serious injury.
• Use the ST-7970 with the BR-7900. Do not use the
BR-7900 in combination with previous STI levers for
road riding or with the BL-R770/ BL-R550 brake
levers for flat handlebars, otherwise the braking
performance provided will be much too strong.
• Because of the characteristics of the carbon fiber
material, you must never modify the levers,
otherwise the lever may break and the brakes may
no longer work as a result.
• Before riding the bicycle, check that there is no
damage such as carbon fiber peeling or cracking. If
there is any damage, replace with a new part
immediately without trying to repair the damage,
otherwise the lever may break and the brakes may
no longer work as a result.
• Read these Technical Service Instructions carefully,
and keep them in a safe place for later reference.
Note
• RD-7970: Be sure to adjust the top
adjustment bolt and the low adjustment
bolt by following the procedures in the
Service Instructions. If these bolts are not
adjusted, the chain may become clamped
between the spokes and the large
sprocket and the wheel may lock, or the
chain may slip onto the small sprocket.
• Use a soft cloth to clean the carbon fiber
levers, and be sure to moisten the cloth
with neutral detergent before using it,
otherwise the lever material may become
damaged and lose its strength.
• Avoid leaving the carbon fiber levers in
places where high temperatures are
present. Also keep them well away from
fire.
• Operation of the levers related to gear
shifting should be made only when the
front chainwheel is turning.
• Always be sure to use the TL-EW01
special tool to remove the cable.
• Be careful not to let water get into the
terminal.
• Parts are not guaranteed against natural
wear or deterioration resulting from
normal use.
• For maximum performance we highly
recommend Shimano lubricants and
maintenance products.
• For any questions regarding methods of
installation, adjustment, maintenance or
operation, please contact a professional
bicycle dealer.
In order to realize the best performance, we recommend that the following combination
be used.
English
Gear shifting operation
4
Rear shifting switch operation
< Shifting switch (X) >
The chain moves from a small sprocket to a larger
sprocket each time the switch is operated.
< Shifting switch (Y) >
The chain moves from a large sprocket to a smaller
sprocket each time the switch is operated.
Front shifting switch operation
< Shifting switch (X) >
The chain moves from the small chainring to the
large chainring.
< Shifting switch (Y) >
The chain moves from the large chainring to the
small chainring.
* For details on the shifting switch selection method, refer to the Service Instructions for the checker.
The checker (SM-EC79) can be used to shift up and shift down shifting switches (X) and (Y).
If the chain falls off on the inside, keep pressing
shifting switch (X) to move the front derailleur to
the outermost position in order to reset the chain.
Shifting switch (X)
Shifting switch (X)
Shifting switch (Y)
Shifting switch (Y)
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